Burner for liquid fuel.



H. McCABE.

BURNER FOR LIQUID FUEL.

APPLlCATlON FILED 1150.30. 1912.

1,1fi%?33, Patented Dec. 21, 1915.

2 SHEETSSHEET I.

H. McCABE.

BURNER FOR LIQUID FUEL.

APPLICATION FILED DEC. 30, 1912.

Lllmfilfifio Patented Dec.21,1915.

2 SHEETS-SHEET 2- WWWWWWW:

HUGH MCCAIBE, OF LAWRENGE, MASSACHUSETTS.

BURNER FOR LIQUID FUEL.

Specification of Letters Patent.

Patented Dec. 21,1915.

Application fi1ed December 30, 1912. Serial No. 739,2 l9.

To all whom it may concern:

Be it known that I, HUGH MoCAnn, a citizen of the United States, residing at Lawrenee, in the county of Essex and Stateof Massachusetts, have invented certain new and useful Improvements in Burners for Liquid Fuel; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to burners for liquid fuel and more particularly to burners in which the liquid fuel is burned in a blast flame.

The object of the present invention is to provide a burner for liquid fuel with improved mechanism for varying the size of the flame.

With the above object in view, the present invention consists in the burner hereinafter described and particularly pointed out in the claims.

In the drawings which illustrate the preferred embodiment of the present invention, Figure l is a side elevation of a heater provided with the burner of the present invention; F ig. 2 is a plan view of the heater; Fig. 3 is a side elevation of the burner; Fig. i is a front elevation of the burner. and Fig. 5 is a section on the line 5-5 of Fig. i.

Referring to the drawings, the furnace, indicated generally by reference numeral 1, of the oil heater is mounted on a carriage 2. The carriage 2 is provided with Wheels 3 and a handle f so that it can easily be wheeled about. The crude oil for use in the heater is carried in the oil tank 5 mounted on the carriage. Compressed air is supplied to the air connection 6 by any convenient means such as a flexible air hose. The compressed air is admitted by means of a valve 7 through a flexible pipe 8 to the'oil burner indicated generally by reference numeral-9. Compressed air is admitted from time to time to the tank 5 by means of a valve 10 to maintain pressureon the oil which is forced up from the bottom ofthe tank through a pipe 11 through the oil cutoff valve 12 and through the flexible pipe 13 to the oil burner 9. A pressure gage 14: is provided to indicate the pressure maintained on the oil in the tank 5.

The furnace 1 is provided with four laterally extending lugs 20 .which are slidingly received in two vertical slots 21 in the carriage. To one of the top lugs 20 is connected alink 22 which at its lower end is connected to a hand lever 23 by means of which the furnace 1 is elevated and lowered. As shown in Fig. 1, the furnace is in its lowered position. When the furnace is raised, the lever 23 is turned upwardly and inclosing and strengthening support for the refractory lining 31 of fire-brick or like ma terial. In the top of the furnace is an opentopped chamber 33 for the reception of the work to be heated. A flue 342 extends through the bottom of the furnace for the passage of the flame shot upward from the oil burner 9. The oil burner 9 is mounted on the bottomof the shell 30 by means of a bracket 35 so that it is raised and lowered with the furnace. 36 to two bars 37 which are secured to the shell 30 by means of bolts 38. The bolts 38 pass through elongated slots 39 in "the bars 37 so that the bars 37 can be raised or low- The cover 32 is hinged at ered to accommodate plates of different thickness under the cover;

The oil burner 9-is illustrated in-detail in Figs. 3, 4 and 5. This burner is supplied with oil under pressure from the tank 5 and withcompressed air. The oil issues from an oil nozzle across the'mouth of which a stream of air is blownfrom an air nozzle. The air atomizes the oil and shoots an exceedingly hot oil flame into the furnace.

The air and oil nozzle outlets are arcuate' in shape and are arranged so that a fanoil pipes 8 and 13. The base has formed upon it a screw-threaded projection 53 through the base of whichextends a number of air passages 54. The base 50 has an annular shoulder 55 upon which is rotatably mounted an annular collar 56, which forms an oil-tight sliding oint 57 with the base.

The collar 56 forms a lip over the edge of of the base and the leg of the T forms an outavardly extending annular flange or rib 62.-

The inner periphery of the collar 56 is enlarged to form an annular seat 63 of L-shape cross section in which the outer edge of the flange 62 is received to form a fluid-tight sliding joint 6 1- between the two collars. The two annular collars 56 and 61 thus coperate with the base 50 to form an annular oil chamber 58. For the purpose of forming an oil outlet 90 through which the oil is discharged from the oil chamber 58 the shoulder' 65 which forms the flat face of the seat 63 is beveled off to form a shallow notch 66 which extends substantially half way around i the inside of the collar 56 and the outer periphery of the flange 62 has cut in it a bevel-bottom shallow notch 67 which extends substantially half way around it. As shown in the drawings, a fluid-tight joint will be formed where the unnotched portions of the shoulder 65 and the flange 62 coincide. A fluid-tight joint will be also be formed between the collar 61 and the collar I 56 where the unnotched portion of the flange 62! fits over and covers the notch 66 in the shoulder 65, and where the unnotched portion of the shoulder 65 fits over and covers the notch 67 in the flange 62. lVhere, however, the notches 66 and 67 register, the

arcuate outlet 90 will be formed through a which the oil issues.

The collar 61 has a longitudinally extending flange or shoulder 68, which, together with the flat face of the flange 62, forms an annular seat of L-shape cross section against which fits the edge 80 of the cap 81 to form a fluid-tight sliding joint 82. The cap 81 is rotatably mounted on the proj ection 53, the screw-threadedend of which ears a nut 8.3 by means of which the cap -81 is pressed against the collar 61 which, in

turn, is pressed against the collar 56, and so these parts are held clamped in adjusted position. Within the cap is an annular air chamber 85 to which air is supplied through the air passages 51 and 54. In order to form anair outlet 91,.one half of the flange 68 isnotched or cut away at 69, and the edge 80 of the cap 81. has a notch 84 which extends substantially half way around the cap.

As shown in the drawings, a fluid-tight joint is; formed where the unnotched edge 80 of the cap 81 coincides with the unnotched portion of the flange 68. A. fluid-tight joint will also be formed where the unnotched portion 80 of the cap 81 extends over and covers the notch 69 and where the unnotched portion of the flange 68 extends within and closes the notch 81 of the cap-edge 80. However, where the notches 69 and 81 coincide, the arcuate-shaped air outlet 91 will be formed through which the air issues from the air chamber 85. The air-jet is blown out across the flat face of the collar 1 and strikes the oil issuing through the oil outlet 90, atomizes it and blows it in a fan-shape spray which forms the flame. By turning the collars 56 and 61 and the cap 81, the length of the oil and air outlets can be varied at will. Since the notch 67 is formed on the same collar 61 as the notch 69 and since the ends of the notch 67 are located radially outward from the ends of the notch 65), one end of the air outlet will always be substantially opposite one end of the oil outlet and by properly positioning the collar 56 and cap 81 relatively to each other, the other end of the air outlet can be made to come substantially opposite the other end of the oil outlet, so that the eflicient action of the burner is insured. The three circular members, which are the collars 56, 61 and the cap 81, may be so adjusted that either a small straight flame or a wide fan-shape flame can be had.

The term fluid as used in the specification and claims is intended to define any fluid whether gaseous or liquid, and the term fluid-tight is used to define a joint which is tight against the kind of fluid to which it is subjected. While the burner of the present invention is intended primarily to be used with oil and compressed air, it will be evident that other burning and motive fluids might be used. For example,-some other inflammable liquid besides oil might be used for the burning fluid, or some other gas, such as steam might be used instead of air for the motive fluid.

While the preferred embodiment of the present invention has been specifically illustrated and described, it is to be understood that the present invention is not limited to the illustrated embodiment of the invention, but may be embodied in other structures within the scope of the invention as defined in the following claims.

I claim 1. A burner for liquid fuel having, in combination, a base provided with liquid and gas passages, an annular collar rotatably mounted on the base having in its edge a notch, a cap rotatably mounted on the base and having in its edge a notch, a second annular collar rotatably mounted on the base between the first collar and the cap to form fluid-tight sliding joints therewith and having in its edges notches which are arranged to register with the notches in the first collar and cap to form arcuate liquid and gas outlets of adjustable length, and means forholding the collars and cap in adjusted position, substantially as described.

2. A burner for liquid fuel having, in combination, a base, two members rotatably mounted on the base having annular opposing edges forming a fluid-tight sliding joint between the members and having notches in their opposing edges which, upon relative rotation of said members, may be brought into register to form an arcuate outlet, said base having a fluid passage communicating with this outlet, and means for holding the members in adjusted position, substantially as described.

3. A burner for liquid fuel having, in combination, a base provided with liquid and gas passages, three circular members rotatably mounted on the base and having fluid-tight sliding. joints between their opposing edges and having notches on their opposing edges, and means for holding said members in adjusted position, so that they may be turned to bring the notches into register and form arcuate liquid and gas outlets, substantially as described.

l. A burner for liquid fuel having, in combination, a base provided with a fluid passage, a lip on the base, a circular member rotatably mounted on the base and having a fluid-tight sliding fit with the lip, said lip and rotatable member having shallow notches in their opposing edges which may be brought into register to form an arcuate outlet which communicates with the fluid passage in the base, and means for holding the parts in adjusted position, so that the length of the arcuate outlet may be varied, substantially as described.

5. A burner for liquid fuel having, in combination, a base provided with a gas passage, a circular cap and a collar mounted on the base so that they are relatively rotatable having a fluid-tight joint between their opposing edges and having notches in their opposing edges, which, when they register,

form an arcuate outlet communicating with the gas passage in the base, and means for holding the cap and collar in adjusted relation so that the length of the arcuate outlet may be varied, substantially as described.

6. A burner for liquid fuel having, in combination, a base provided with liquid and gas passages, an annular collar rotatably mounted on the base having in its inner periphery a notch, a second annular collar rotatably mounted on the base, said second collar together with the base and first collar forming a liquid chamber, a cap rotatably mounted on the base forming with the base and a second collar a gas chamber and having in its edge a notch, said second collar having in the edge which engages the first collar a notch and having in the edge which engages the cap a notch which subtends substantially the same angle as the notch in its other edge, and means for holding the collars and cap in adjusted position, substantially as described.

7. A burner for liquid fuel having, in combination, a base, two members rotatably mounted on the base having a fluid-tight sliding joint between them and having cutaway portions, Which, upon relative rotation of said members may be brought into register to form an arcuate outlet, said base being provided with a fluid passage communicating with this outlet, and means for holding the members in adjusted position, substantially as described.

8. A burner for liquid fuel having, in combination, a base provided with liquid and gas passages, three circular members rotatably mounted on the base and having fluidtight sliding joints between them and having cut-away portions, which, upon relative rotation of said members, may be brought into register to form arcuate liquid and gas outlets, and means for holding said members in adjusted position, substantially as described.

HUGH MoCABE. Witnesses JAMES A. MoGABE, MoNIoA I. BUTLER.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

